Velocity

Only decent piece of Java software I have ever worked with.

And of all templatting systems out there, it is probably the one with the most sane syntax and design.

Does one thing, and does it well, I wish others could learn from this principle.

There may be more powerful template engines out there, but Velocity is very easy to handle and it just works without getting in your way.

It does templating well. Really my largest problem with it was getting rid of it's log file. So I set it to use the log4j logger.

Properties velocityProps = new Properties();
velocityProps.setProperty( "runtime.log.logsystem.log4j.logger", "root" );
Velocity.init(velocityProps);